So, I'm currently running a Call of Cthulhu campaign and I'm trying to determine what to do with something along the lines of feats of strength and whatnot. I came upon a time when a character had to try to crank start a rundown vehicle and I imagine a feat like that would be difficult and require some sort of roll, but I'm new to the system and I'm sure what type of roll to call for.

1 Answer
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In Call of Cthulhu, for straight stat checks you usually have someone roll percentage vs 5 times the relevant stat. If you are pitting a stat against another stat, you use the Resistance Table (read the CoC rules for that) but it's basically 50% + 5x acting stat - 5x opposing stat.

In this case assign the crank a STR or SIZ and they'd roll against it on the Resistance Table.

That's RAW. I always hated tables so we'd do a roll of N times stat based on difficulty - 5 x stat is an easy roll, 1 x stat is super hard, and everything in between. It's fine to make stuff up as the Keeper in CoC.

You will find you need the Resistance Table for a few important things; it's good to know how and when to use it. It also is something that you can use to add to the mood of the game.
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RuneslingerJun 12 '12 at 2:19